Oscillating fan



P. DE CLAMECY. OSCILLATING FAN.

' APPLICAHON FILED MAR. 9. 1920.

Patented Oct. 25, 1921.

2 SHEETS-SHEET l.

P. DE CLAMECY. OSCILLATING FAN.

- APPLICATION FILED MAR. 9: I920- 1,394,975.

Patented Oct. 25, 1921.

2 SHEETS-SHEET 2.

fitness Inventor $.Ma/M fig; '7

M/L Z UNITED STATES PATENT OFFICE.

PHILIPPE DE CLAMECY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO B. F.STURTEVANT COMPANY, OF HYDE PAR-K, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

OSGILLATING FAN.

Application filed March 9,

T 0 all whom it may concern Be it known that I, PHILIPPE nn OLAMECY, acitizen of the United States, residing at Boston, in the county ofSufiolk and State of Massachusetts, have invented certain new and usefulImprovements in Oscillating Fans; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same. 1

This invention relates to oscillating fans and more particularly to fanswhich are oscillated by the action of air currents produced by therotation of the fan blades upon current obstructing means carried by theoscillating element of the fan and operated to alternately obstruct thedelivery of, air at opposite sides of the axis of oscillation.

One object of the present invention is to provide a fan of the generalcharacter above indicated in which the current obstructing means isrendered operative to effect the reversal of the direction ofoscillation of the fan solely by the action of air currents pro duced bythe fan.

To this end a feature of the invention comprises the provision, in anoscillating fan, of a current obstructing device supported by theoscillating element of the fan, said device being free to rotatecontinuously in the same direction about the axis of rotation of the fanwheel and presenting to the air blast aface which is inclined to theplane of rotation of the fan blades.

Other objects of the invention and the features of constructionby whichthey are attained will be set forth hereinafter in con'-' nection withthe following description of what is now considered to be the preferredembodiment of the invention illustrated in the accompanying drawings, inwhich Figure 1 is a View in front elevation'of the fan; Fig. 2 is a viewin side elevation thereof, a portion being broken away to disclose partsof the fan otherwise obscured;

and Fig. 8 is a detail sectional view, on an enlarged scale, showing thecurrent obstructing device, the section being taken on the line 33 ofFig. 1.

As illustrated in the drawings, anelectric motor 4: having a rotary fanwheel 5 secured to its armature shaft, is pivotally mountedSpecification of Letters Patent.

Patented Oct. 25, 1921.

1920. Serial No. 364,422.

upon a post 6 which is journaled to oscillate freely in a hollowpedestal 7 rising from a stationary base 8. The pivotal connectionbetween the motor 4i and the post 6, which permits tilting adjustment ofthe motor and fan to vary the path swept by the air blast of the fan,comprises a bolt 9 that extends transversely through the top of the postand through a pair of tongues 10 depending from the motor casing andembracing the post. The pivot bolt 9 is-provided with a thumb-screw 11by means of which the tongues 10 areclamped to the post to hold themotor in its angularly adjusted position. The post 6 may be supported,as shown, upon ball-bearings 12 and it may be made hollow to permit thepassage therethrough of the wires leading from the motor. The

fan wheel 5 is inclosed and protected from contact with exterior objectsby the usual cage or guard frame 14 which is rigidly attached to themotor casing.

In order to attain a greater range of tilting adjustment of the motorand fan than that permitted by the pivotal connection between the motorand the post 6, provision is made for universal angular adjustment ofthe pedestal 7 and the base 8. To this end the pedestal and base areconnected by means of a ball-and-socket joint, disclosed in a co-pendingapplication Serial No. 359,998, filed February 19, 1920, by the pres entapplicant and assigned to the B. F. Sturt-evant Company. For the purposeof insuring that the fan will be easily oscillated by the action of itsown air blast upon a current obstructing device, irrespective of whetherthe post 6 and pedestal T are sup ported in vertical or tiltedpositions, the motor l is so disposed with respect to the post 6 thatthe motor and allpartscarried thereby are perfectly balanced on oppositesides of the axis of oscillation of the fan.

The currentobstructing device, against this end the disk 15 is carriedby a supporting arm 16, radially projecting from a bearing sleeve 17,which is ournaled on a stud 18 that is Carried by the cage or guardframe ture shaft of the motor.

14 and is disposed co-axially with the arma- The stud 18 is removablysecured to a hub 19 (Fig. 4) from which the guard frame wires radiate,the stud having at one end a reduced threaded portion which projectsthrough a central opening in the hub 19 and which is provided with a nut20 that is tightened against the outer face of the hub. The bearingsleeve 17 is confined and free to turn between a head 21, at the innerend of the stud 18, and a spacing collar 22 that is interposed betweenthe sleeve and the hub 19 of the guard frame. 7

The current obstructing disk 15 is of such form and is so disposed, withits face inclined to the plane of rotation of the fan wheel, that theblast of air produced by the fan will tend to rotate the disk aboutthestud 18. In order to facilitate the rotation of the obstructing disk15, the weight of the disk, the supporting arm 16, and certain otherassociated parts, shortly to be described, are exactly balanced'by acounterbalance Weight23 that is carried by a weight arm 24: radiallyprojecting from the bearing sleeve 17 on the opposite side of the stud18 1 from the disk-supporting arm 16.

In the construction shown, the obstructing disk15 is st ffened andmaintained in its laterally flexed condition by means of a. fiatreinforcing disk 25 having laterally projecting from its periphery asegmental flange 26. The flat reinforcing disk 25 is disposed in a planeparallel to the plane of rotation of the fan wheel. The edge of theflange 26 rises gradually'from each of its ends, which lie in the planeof the disk 25,

to the middle point of said edge, and one side of the curved obstructingdisk 15 is secured adjacent its periphery to this edge of the flange 26and to the marginal portion of the disk 25 which intervenes between thea the guard frame 14.80 as to readily effect the oscillation of themotor and fan, a

ends of said flange. I

. In order to transmit the thrust of the obstructingdisk to theperipheral portions of spherical roller 27 is journaled on a pin 28projecting radiallyifrom the flange 26 of the supporting frame for theobstructing disk, and arranged'to roll over an annular I, ported in aplane parallel to the plane of rotation of the fan wheel with itsperipheries concentric with the path of rotation of the roller 27. Withthis construction, the

bearing stud 18, about which the obstructingv disk rotates, is relievedof the thrust of said 5 f disk, and the obstructing disk itself isprevented from being laterally displaced by the force of the air blastfrom the fan. 7

name of the manufacturer of the fan or an appropriate name-plate ortrademark. In order that any legend or display which it may be desiredto associate with the obstructing device shall be constantly maintainedin an upright position so that the display will be readable or properlypresented to view at all times, provision is made for preventing thedisplay matter from being turned relatively to the axis of the fan asthe obstructing device rotates. To this end a separate disk 30 isprovided to carry the legend or display, and thisdisk 30 is centrallypivoted by a pin 31 to the front of the reinforcing disk 25 and thedisplay disk 30 is provided with a weight or thickened portion 32 whichcauses the former to rotate freely about its pivot 31, as it travelsbodily with the obstructing member about the stud 18, so that itsthickened portion 32 is maintainedllowermost by gravity.

1 While the particulars of construction herein set forth are well suitedto one form of the invention, it is to be understood that theseparticulars are not essential since they may bevariously changed ormodified without departing from the true scope of the actual inventionas definedoby the following claims. a 1 1,

Having described'the invention, what is claimed as new is I 7 1. Anoscillating fan having, in combination, a motor, a fan wheel, a supportupon which the motor and fan wheel are arranged to oscillate, a currentobstructing device adapted to be rotated about the axis of the" fanwheel to cause the, fanto oscillate alter nately inopposite directionsas it, rotates,- a guard frame carried by the motor and in-.

closing the fan wheel, a track supported by the guard frame, and abearing membercarr ed by the current obstructing device for engaglngWlth' the track as said dev1ce;ro-' tates.

p 2. An oscillating fan having, in combina-: tion, a motor, a fan wheel,a support upon,

which the motor and fan wheel are arranged to osclllate, and a currentobstructingdevice adapted .to' be rotated continuously about the axis ofthe fanwheel to cause the fan tooscillate alternately in. oppositedirections as it rotates.

3. An oscillating fan having, in combination, a motor, a fanwheel,asupport upon which the motor and fan wheel are arranged"to-oscillate, and a current obstructing device adapted to be rotatedcontinuously about 7 theaxis of the fan wheel by the action of iao thecurrent of air produced by the fan to cause the fan to oscillatealternately in opposite directions as it rotates.

4. An oscillating fan having, in combination, a motor, a fan wheel, asupport on which the motor and fan wheel are mounted to oscillate, thesupport comprising a base and a pedestal connected therewith withprovision for angular adjustment relatively thereto, the motor being sodisposed relatively to the support that the weight of the motor and fanis balanced on opposite sides of the axis of oscillation of the fan, anda current obstructing device adapted to be rotated continuously aboutthe axis of the fan wheel by the action of the current of air producedby the fan to cause the fan to OS- cillate alternately in oppositedirections as it rotates.

5. An oscillating fan having, in combination, a motor, a fan wheel, asupport on which the motor and fan wheel are arranged to oscillate, anda current obstructing device supported by the oscillating element of thefan, said device being free to rotate continuously about the axis of thefan wheel and presenting to the current of air produced by the fan wheela face inclined to the. plane of rotation of the latter whereby theaction of said current effects the rotation of said member.

6. An oscillating fan having, in combination, a motor, a fan wheel, asupport on which the motor and fan wheel are arranged to oscillate, acurrent obstructing device pivotally mounted for balanced rotation aboutthe axis of the fan wheel and presenting an inclined face to the currentof air produced by the fan whereby the obstructing member is caused torotate continuously and the fan wheel to oscillate alternately inopposite directions during the rotation of the latter.

7. An oscillating fan having, in combination, a motor, a fan wheel, aguard frame carried by the motor and inclosing the fan wheel, a supporton which the motor and fan wheel are arranged to oscillate, and acurrent obstructing device for causing the fan to oscillate alternatelyin opposite directions as it rotates, said device comprising a diskmounted to present an inclined face to the current produced by the fanat one side of the axis of rotation of the latter, a support for saiddisk, a bearing stud carried by the guard frame and arranged coaxiallywith the armature shaft of the motor on which the disk support ismounted to rotate, a counter weight for balancing the weight of saiddisk and disk support, an annular track carried by the guard frame, anda roller carried by the obstructing device and bearing against saidtrack to transmit thereto the thrust of the obstructing device.

8. An oscillating fan having, in combination, a motor, a fan wheel, astationary support on which the motor and fan wheel are arranged tooscillate, a current obstructing device supported by the oscillatingelement of the fan and adapted to be rotated continuously about the axisof the fan wheel by the action of the current of air produced by the fanto cause the fan to oscillate alternately in opposite directions as itrotates, and a display member pivoted above its center of gravity tosaid obstructing device to cause it to rotate about its pivotalconnection with the obstructing device as the latter rotates about theaxis of the fan wheel so asto prevent the display member from beingturned relatively to the stationary fan support during said rotation ofthe obstructing member.

9. An oscillating fan having, in combination, a motor, a fan wheel, astationary support on which the motor and fan wheel are arranged tooscillate, a current obstructing disk supported by the oscillatingelement of the fan and adapted to be rotated con tinuously about theaxis of the fan wheel by the action of the current of air produced bythe fan to cause the fan to oscillate alternately in opposite directionsas it rotates, a display disk disposed in a plane substantially normalto the axis of the fan wheel and centrally pivoted to the obstructingdisk, and a weight secured to said display disk adjacent its peripheryto cause the latter to rotate about its pivotal connection with theobstructing device as the obstructing device rotates about the axis ofthe fan wheel so as to maintain the display disk against turningrelatively to the stationary fan support during said rotation of theobstructing disk.

10. An oscillating fan having, in combination, a motor, a fan wheel, astationary support on which the motor and fan wheel are arranged tooscillate, a current obstructing device supported by the oscillatingelement of the fan and adapted to be rotated continuously about the axisof the fan wheel by the action of the current of air produced by thefan, said device presenting an inclined face to said current of air andhaving an oppositely directed display face disposed in a plane normal tothe axis of the fan wheel.

11. An oscillating fan having, in combination, a motor, a fan wheel, asupport on which the motor and fan wheel are arranged to oscillate, acurrent obstructing device supported by the oscillating element of thefan, said device being arranged to rotate about the axis of the fanwheel and presenting to the current of air produced by the fan wheel aface inclined to the plane of rotation of the latter, and means fortransmitting the thrust of said member to the outer portions of saidoscillating element.

PHILIPPE DE' CLAMECY.

